公开(公告)号：US20130245772A1

公开(公告)日：2013-09-19

申请号：US13785644

申请日：2013-03-05

申请人： BIOMET MANUFACTURING CORP.

发明人： David W. SCHROEDER ,  Jordan H. FREEDMAN ,  James E. GUNTER ,  Brian D. SALYER ,  H. Gene HAWKINS

IPC分类号： A61F2/30

CPC分类号： A61F2/3094 ,  A61F2/30 ,  A61L27/16 ,  B29C47/0021 ,  B29C47/54 ,  B29C47/8805 ,  B29C55/30 ,  B29C2035/085 ,  B29K2023/0683 ,  B29K2105/25 ,  C08F110/02 ,  C08L23/06 ,  C08F2500/01 ,  C08F2500/11

摘要： Solid-state deformation processing of crosslinked high molecular weight polymers such as UHMWPE, for example by extrusion below the melt transition, produces materials with a combination of high tensile strength and high oxidative stability. The materials are especially suitable for use as bearing components in artificial hip and other implants. Treated bulk materials are anisotropic, with enhanced strength oriented along the axial direction. The material is oxidatively stable even after four weeks of accelerated aging in a pressure vessel containing five atmospheres of oxygen (ASTM F2003). Because of its oxidative stability, the deformation processed material is a suitable candidate for air-permeable packaging and gas sterilization, which has thus far been reserved for remelted crosslinked UHMWPE.

摘要翻译： 交联的高分子量聚合物如UHMWPE的固态变形处理例如通过在熔融转变以下挤出产生具有高拉伸强度和高氧化稳定性的组合的材料。 这些材料特别适用于人造髋关节和其他植入物中的轴承部件。 处理的散装材料是各向异性的，其强度沿轴向方向取向。 即使在含有五个大气压的氧气的压力容器中，即使加速老化四周后，材料也是氧化稳定的（ASTM F2003）。 由于其氧化稳定性，变形处理材料是透气包装和气体灭菌的合适的候选者，迄今为止，这已经被保留用于再熔交联的UHMWPE。